Thermoplastic polyurethanes having improved binder properties fo

Details Thermoplastic polyurethanes having improved binder properties fo Thermoplastic polyurethanes having improved binder properties fo

1989-02-08

1991-01-29

Lesmes, George F.

Stock material or miscellaneous articles

Composite

Of polyamidoester

428900, 428694, G11B 500

Patent

active

049885740

ABSTRACT:
A magnetic recording tape, as for audio apparatus, video apparatus, or computers, has a binder containing magnetic particles therein bonding the magnetic particles to the substrate. The binder comprises the reaction product of a polyisocyanate and a blend of a hydroxyl terminated polyester intermediate and a derivative of a bis-phenol A chain extender having the formula ##STR1## where R.sup.1 and R.sup.2, independently, is an alkylene having from 2 to 4 carbon atoms, with 2 carbon atoms, that is, ethylene, being preferred.

REFERENCES:
patent: 3493634 (1970-02-01), Kolycheck et al.
patent: 3951919 (1976-04-01), Pinfold et al.
patent: 4442282 (1984-04-01), Kolycheck
patent: 4568611 (1986-04-01), Amirsakis et al.
patent: 4643949 (1987-02-01), Kolycheck et al.
patent: 4775593 (1988-10-01), Heberger et al.
patent: 4842942 (1989-06-01), Yatsuka et al.

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